Detecting device and automatic cleaner

Abstract

A detecting device for detecting liquid or colloid, comprising: a light emitting device, configured to emit first light, wherein a first angle between a first emitting direction of the first light and a surface when the detecting device is located on the surface, wherein the first angle is larger than 0° and smaller than 90°; an optical sensor, configured to detect first optical data generated based on the first light; and a processing circuit, configured to determine if the liquid or the colloid exists in a predetermined range of the detecting device based on the first optical data. An automatic cleaner applying the detecting device is also disclosed.

What is claimed is: 
     
       1. A detecting device for detecting liquid or colloid, comprising:
 a light emitting device, configured to emit first light, wherein a first angle between a first emitting direction of the first light and a surface when the detecting device is located on the surface, wherein the first angle is larger than 0° and smaller than 90°; 
 an optical sensor, configured to detect first optical data generated based on the first light; and 
 a processing circuit, configured to determine if the liquid or the colloid exists in a predetermined range of the detecting device based on the first optical data; 
 wherein the light emitting device is further configured to emit second light, wherein the first light has a first wavelength and the second light has a second wavelength different from the first wavelength; 
 wherein the processing circuit determines if an obstacle exists based on the first optical data and determines if the liquid or the colloid exists based on the second optical data, wherein the processing circuit determines the liquid/colloid exists if no liquid/colloid is detected based on the first optical data and then the liquid or the colloid is detected based on the second optical data, wherein the processing circuit determines the liquid/colloid does not exist if an obstacle is detected based on the first optical data and then the liquid/colloid is detected based on the second optical data. 
 
     
     
       2. The detecting device of  claim 1 , wherein the light emitting device comprises:
 a circuit board, comprising a board surface perpendicular with the surface; and 
 a first light source, provided on the circuit board and configured to emit the first light, wherein a second angle exists between the board surface and the first emitting direction, wherein a sum of the first angle and the second angle is W. 
 
     
     
       3. The detecting device of  claim 2 , wherein the optical sensor is located in or on the circuit board. 
     
     
       4. The detecting device of  claim 1 , wherein the light emitting device comprises:
 a circuit board, wherein a second angle exists between a board surface of the circuit board and the surface, wherein a sum of the first angle and the second angle is 90°; and 
 a first light source, provided on the circuit board, wherein the first emitting direction is perpendicular with the board surface. 
 
     
     
       5. The detecting device of  claim 4 , wherein the optical sensor is located in or on the circuit board. 
     
     
       6. The detecting device of  claim 1 , wherein the processing circuit determines if the liquid or the colloid exists in the predetermined range according a spreading level of reflected light of the first light.